Physical Science 8.1 Review

12345678910111213141516171819
Across
  1. 3. ______displacement is a type of reaction that occurs when two compounds exchange atoms or ions
  2. 7. a chemical equation that has the same number of each type of atom on each side of the arrow is said to be__________
  3. 9. chemical change resulting from a collision between atoms or molecules
  4. 12. substances that produce hydroxide anions in a water solution; slippery; have a bitter taste
  5. 14. the number before each molecular formula
  6. 16. according to the law of conservation of_____, the total mass of the reactants is equal to the total mass of the products
  7. 17. _____displacement is a type of reaction that occurs when an element in a compound is replaced by another element
  8. 18. original substances that undergo a chemical reaction
Down
  1. 1. this type of reaction occurs when two or more substances combine to form a third substance
  2. 2. a chemical reaction that releases thermal energy
  3. 4. a reaction that absorbs thermal energy
  4. 5. this type of reaction occurs when a compound breaks down to form different substances
  5. 6. to break apart
  6. 8. reactants are located on the_______side of an equation
  7. 9. an expression that uses chemical symbols to represent a chemical reaction
  8. 10. chemical formulas cannot be _______to balance an equation
  9. 11. substances that are neither acids nor bases
  10. 13. substances that produce hydronium ions when dissolved in water; have a sour taste
  11. 15. new substances produced by a reaction
  12. 18. products are located on the________side of an equation
  13. 19. any ionic compound that does not contain H or OH